== sanity test 184c: Concurrent write and layout swap ==== 08:37:32 (1769089052) 41+0 records in 41+0 records out 42991616 bytes (43 MB, 41 MiB) copied, 2.48038 s, 17.3 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 3.37257 s, 16.2 MB/s ref file size: ref1(42991616), ref2(54525952) 2624+0 records in 2624+0 records out 42991616 bytes (43 MB, 41 MiB) copied, 4.60677 s, 9.3 MB/s Copied 1376256 bytes before swapping layout...